sw/maindec/eae_8e/maindec-8e-d0mb-d.txt

   1                         DISCLAIMER
   2
   3         This document file was created by scanning  the
   4         original  document and then editing the scanned
   5         text.  As much as possible, the  original  text
   6         format was  restored.  The original page breaks
   7         have been  removed.  The original  spelling and
   8         grammar  has  been  preserved.   The  assembler
   9         listing  of   the  original  document   is  not
  10         included in this document.
  11
  12         B. Baehr (bb@balloo.han.de), Feb. 22, 1999
  13
  14
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  21
  22
  23         PRODUCT CODE:   MAINDEC-8E-D0MB-D
  24
  25         PRODUCT TEST:   KE8-E (EAE) INSTRUCTION TEST 2
  26                         MULTIPLY AND DIVIDE
  27
  28         DATE CREATED:   FEBRUARY 9, 1972
  29
  30         MAINTAINER:     DIAGNOSTIC GROUP
  31
  32         AUTHOR:         ED FORTMILLER
  33
  34
  35                 COPYRIGHT © 1972
  36                 DIGITAL EQUIPMENT CORPORATION
  37 \f
  38 1.      ABSTRACT
  39         --------
  40
  41         THE PDP-8/E EAE (KE8-E) MULTIPLY-DIVIDE TEST, TESTS AND EXERCISES
  42         THE MULTIPLY AND DIVIDE HARDWARE OF THE KE8-E OPTION.  FIXED
  43         NUMBERS WITH PREDETERMINED SOLUTIONS, AND RANDOM NUMBERS
  44         WITH SIMULATED SOLUTIONS ARE USED.  THE ABILITY TO OPERATE
  45         WITH THE INTERRUPT ENABLED IS ALSO TESTED.
  46
  47 2.      REQUIREMENTS
  48         ------------
  49
  50 2.1     EQUIPMENT
  51         ---------
  52         PDP-8/E OR /M PROCESSOR, KE8-E OPTION, AND AN ASR 33/35
  53         TELETYPE ARE REQUIRED.
  54
  55 2.2     STORAGE
  56         -------
  57         LOCATIONS 0000 THROUGH 7570 ARE USED.
  58
  59 2.3     PRELIMINARY PROGRAMS
  60         --------------------
  61
  62         ALL PROCESSOR RELATED TEST PROGRAMS MUST HAVE BEEN RUN
  63         SUCCESSFULLY.  THIS PROGRAM ASSUMES THAT THE PROCESSOR AND TELE-
  64         TYPE ARE OPERATING CORRECTLY, AND THAT ALL OTHER KE8-E INSTRUCTIONS
  65         OTHER THAN "MUY" AND "DVI" HAVE BEEN TESTED AND OPERATE CORRECTLY.
  66
  67 3.      LOADING PROCEDURE
  68         -----------------
  69
  70 3.1     METHOD
  71         ------
  72
  73         THE BINARY LOADER IS USED TO LOAD THE PROGRAM INTO ANY DESIRED
  74         FIELD.
  75
  76 4.      STARTING PROCEDURE
  77         ------------------
  78
  79 4.1     CONTROL SWITCH SETTINGS
  80         -----------------------
  81
  82         SR0=1   HALT AFTER CURRENT ROUTINE.  PROGRAM HALTS AT THE
  83                 COMPLETION OF THE CURRENT TEST ROUTINE.  THE COMPLETED
  84                 ROUTINE NUMBER IS DISPLAYED IN THE AC.
  85
  86         SR1=0   SELECT MODE OF OPERATION ACCORDING TO SR10 AND SR11.
  87
  88         SR1=1   SELECT THE ROUTINE NUMBER WHICH IS IN SR9-11.  IF
  89                 WHILE RUNNING THE PROGRAM SR1 IS SET TO A "1", THE
  90                 PROGRAM WILL HALT WITH THE CURRENT ROUTINE NUMBER
  91                 DISPLAYED IN THE AC.  TO SELECT A NEW ROUTINE AT THIS
  92                 POINT, PLACE THE NEW DESIRED ROUTINE IN SR9-11 AND PRESS
  93                 CONTINUE, THE NEW ROUTINE NUMBER WILL NOW BE
  94                 DISPLAYED IN THE AC.
  95 \f
  96 SR2=1   LOOP ROUTINE.  CURRENT ROUTINE IS REPEATED.
  97
  98 SR3=1   LOOP PROGRAM.  ENTIRE PROGRAM IS REPEATED.
  99
 100 SR4=1   LOCK ON TEST.  THE TEST CURRENTLY BEING EXECUTED
 101         IS REPEATED.
 102
 103 SR5=0   PRINT ON ERROR.
 104
 105 SR5=1   HALT ON ERROR.
 106
 107 SR6=1   HALT AFTER PRINT.  PROGRAM HALTS AFTER ERROR
 108         PRINTOUT.
 109
 110 SR7=1   PRINT FAILURE RATE.  THE PROGRAM PRINTS THE NUMBER
 111         OF FAILURES PER HUNDRED REPETITIONS OF THE SAME
 112         TEST.  PROGRAM HALTS AFTER THE PRINTOUT.  SR5 MUST
 113         BE SET FOR THE PRINTOUT TO OCCUR.
 114
 115 SR8=1   PRINT SIMULATION AND/OR ENTER SCOPE LOOP.  FOR
 116         ROUTINES 0 AND 1 PROGRAM PRINTS MULTIPLY SIMULATION
 117         AND ENTERS MULTIPLY SCOPE LOOP.  FOR ROUTINES 2
 118         AND 3 THE PROGRAM PRINTS DIVIDE SIMULATION AND
 119         ENTERS THE DIVIDE SCOPE LOOP.  FOR ROUTINES 4
 120         THROUGH 7 PROGRAM ENTERS THE EXERCISER SCOPE LOOP
 121         FOR THE INDIVIDUAL ROUTINE.  SR5 MUST BE SET TO 0
 122         FOR THIS OPTION TO BECOME ACTIVE.
 123
 124 SR9-11  SR9     SR10    SR11
 125 WITH     X        0       0     EXECUTE EACH ROUTINE IN "A" AND "B" MODES.
 126 SR1=0    X        0       1     EXECUTE EACH ROUTINE IN "A" AND "B" MODES.
 127          X        1       0     SELECT "A" MODE.
 128          X        1       1     SELECT "B" MODE.
 129
 130 SR9-11  SR9     SR10    SR11
 131 WITH     0        0       0     SELECT ROUTINE 0.  FIXED MULTIPLY TEST.
 132 SR1=1    0        0       1     SELECT ROUTINE 1.  RANDOM MULTIPLY TEST.
 133          0        1       0     SELECT ROUTINE 2.  FIXED DIVIDE TEST.
 134          0        1       1     SELECT ROUTINE 3.  RANDOM DIVIDE TEST.
 135          1        0       0     SELECT ROUTINE 4.  MULTIPLY/DIVIDE EXERCISE TEST.
 136          1        0       1     SELECT ROUTINE 5.  MULTIPLY/DIVIDE EXERCISE TEST.
 137          1        1       0     SELECT ROUTINE 6.  MULTIPLY/DIVIDE EXERCISE TEST.
 138          1        1       1     SELECT ROUTINE 7.  MULTIPLY/DIVIDE EXERCISE TEST.
 139 \f
 140 4.2     STARTING ADDRESS
 141         ----------------
 142
 143         THIS PROGRAM STARTS AT LOCATION 0200.
 144
 145 4.3     PROGRAM AND/OR OPERATOR ACTION
 146         ------------------------------
 147
 148         WITH THE PROGRAM LOADED IN CORE PROCEED AS FOLLOWS:
 149
 150         A.    INSURE TELETYPE IS ON-LINE.
 151
 152         B.    LOAD ANY PAPER TAPE IN THE TELETYPE READER AND TURN
 153               IT ON.
 154               IF AN ERROR OCCURS, TURN THE TELETYPE READER OFF TO
 155               DETERMINE IF THE CAUSE WAS FROM INTERRUPT INTERACTION.
 156
 157         C.    LOAD ADDRESS 0200.  PRESS CLEAR AND CONTINUE.
 158
 159         D.    PROGRAM HALTS AT LOCATION 0201.
 160
 161         E.    SET ANY DESIRED OPTIONS IN SR AND PRESS CONTINUE.
 162               IF SR1 WAS SET THE PROGRAM WILL HALT AT LOCATION
 163               4574 WITH THE SELECTED ROUTINE NUMBER IN THE AC.
 164               SET SR1=0 AND SELECT THE DESIRED MODE OF OPERATION
 165               IN SR10 AND 11, THEN PRESS CONTINUE.
 166
 167         F.    THE PROGRAM WILL HALT AT PROGRAM END HALT (LOCATION 0250)
 168               AFTER THE LAST ROUTINE HAS BEEN EXECUTED, PROVIDED NO
 169               LOOP OPTIONS HAVE BEEN SET.
 170
 171                             NOTE:
 172                   FOR A NORMAL PROGRAM RUN, SET SR SWITCHES
 173                   TO 0000.  PROGRAM WILL RUN FROM START TO
 174                   FINISH, EXECUTING EACH ROUTINE IN "A" AND
 175                   "B" MODES, PRINTING ALL ERRORS AS THEY
 176                   OCCUR.
 177 \f
 178 5.      OPERATING PROCEDURE
 179         -------------------
 180
 181 5.1     PROGRAM AND/OR OPERATOR ACTION
 182         ------------------------------
 183
 184 5.1.1   NORMAL PROGRAM HALTS
 185         --------------------
 186
 187         LOCATION 0201   START HALT.  THIS HALT OCCURS AT THE START
 188                         OF THE PROGRAM TO PERMIT SETTING OF SR
 189                         OPTIONS.  SET ANY DESIRED OPTIONS IN THE SR
 190                         AND PRESS CONTINUE.
 191
 192         LOCATION 0251   PROGRAM END HALT.  THIS HALT OCCURS UPON
 193                         COMPLETION OF LAST ROUTINE, IF THE LOOP PROGRAM
 194                         OPTION IS NOT SET.  SET ANY DESIRED OPTIONS IN
 195                         THE SR AND PRESS CONTINUE.
 196
 197         LOCATION 0301   ROUTINE HALT.  THIS HLT OCCURS AT THE
 198                         COMPLETION OF THE CURRENT ROUTINE IF SR0 IS
 199                         SET.   PRESSING CONTINUE RESUMES THE PROGRAM.
 200
 201         LOCATION 0320   ROUTINE SELECT HALT.  THIS HALT OCCURS IF
 202                         WHILE RUNNING THE PROGRAM SR1 IS SET.  THE
 203                         ROUTINE PRESENTLY BEING EXECUTED IS DISPLAYED
 204                         IN THE AC.  IF A NEW ROUTINE IS TO BE SELECTED
 205                         LEAVE SR1 SET AND PLACE THE NEW ROUTINE NUMBER
 206                         IN SR9-11 AND PRESS CONTINUE.  IF NO NEW ROUTINE
 207                         IS DESIRED SET SR1=0 AND THE DESIRED MODE OF
 208                         OPERATION IN SR10 AND 11 AND PRESS CONTINUE.
 209                         THE PROGRAM WILL START EXECUTION WITH ROUTINE 0.
 210
 211         LOCATION 4574   MODE SELECTION HALT.  THIS HALT OCCURS AS THE
 212                         RESULT OF SELECTING A ROUTINE.  SET SR1=0 AND
 213                         SELECT THE DESIRED MODE OF OPERATION IN SR10
 214                         AND 11.  PRESS CONTINUE.
 215
 216 6.      ERRORS
 217         ------
 218
 219 6.1     PROGRAM AND/OR OPERATION ACTION
 220         --------------------------------
 221
 222         THE PURPOSE OF THIS PROGRAM IS TO DETECT OPERATION ERRORS
 223         IN THE MULTIPLY-DIVIDE HARDWARE.  UPON DETECTION OF AN ERROR, THE
 224         PROGRAM EITHER HALTS, OR GIVES AN ERROR PRINTOUT DEPENDING ON THE
 225         SETTING OF SR5.
 226         IN ORDER TO AID IN PINPOINTING THE CAUSE OF AN ERROR, ADD-
 227         ITIONAL SR OPTIONS ARE AVAILABLE TO THE USER.
 228
 229         SR6, HALT AFTER PRINT OPTION.  HALTS THE PROGRAM TO PERMIT USER
 230         TO EXAMINE THE LATEST ERROR AND DETERMINE IF IT IS THE ONE HE WISHES
 231         TO TROUBLESHOOT.
 232
 233         SR7, PRINT FAILURE RATE OPTION.  INFORMS THE USER OF THE
 234         FREQUENCY OF AN ERROR.  A HIGH RATE OF FAILURE ERROR SHOULD BE EASIER
 235         TO TROUBLE SHOOT THAN AN INTERMITTENT ERROR.  IF THE USER WISHES
 236         TO TROUBLESHOOT USING THE PRESENT SET OF SYMPTOMS, HE CAN THEN SET SR8.
 237
 238         SR8, PRINT SIMULATION AND ENTER SCOPE LOOP OPTION, CAUSES PRINTOUT
 239         OF THE CORRECT CONTENTS OF THE LINK, AND OF THE AC AND MQ REGISTERS
 240         FOR EACH COUNT OF THE STEP COUNTER.  FOLLOWING THE SIMULATION PRINTOUT
 241         THE PROGRAM ENTERS A MULTIPLY OR DIVIDE SCOPE LOOP, DEPENDING ON THE
 242         ROUTINE CURRENTLY IN EXECUTION.  ROUTINES 4 THROUGH 7 DO NOT GIVE A
 243         SIMULATION PRINTOUT, BUT MERELY ENTER THEIR RESPECTIVE SCOPE LOOPS.
 244
 245         NO PRINTOUTS WILL OCCUR UNLESS SR5 IS SET TO 0.
 246
 247         IF SR5 IS SET TO HALT ON ERROR, AND THE USER WISHES TO
 248         OBTAIN PRINTOUTS FOR THE CURRENT FAILURE HE MAY OBTAIN THEM BY
 249         SETTING SR5 TO 0.  (TO PRINT POSITION).
 250
 251 6.2     ERROR HALTS AND DESCRIPTION
 252         ---------------------------
 253
 254         LOC 1310        MULTIPLY ERROR HALT.  THE AC DISPLAYS NUMBER
 255                         OF ROUTINE WHERE FAILURE OCCURRED.  (ROUTINE
 256                         0 OR 1.)  PRESS CONTINUE TO RESUME TESTING, OR
 257                         SET SR5 TO 0 TO OBTAIN ERROR PRINTOUTS.
 258
 259         LOC 1511        DIVIDE ERROR HALT.  THE AC DISPLAYS NUMBER OF
 260                         ROUTINE WHERE FAILURE OCCURRED.  (ROUTINE
 261                         2 OR 3.)  PRESS CONTINUE TO RESUME TESTING, OR
 262                         SET SR5 TO 0 TO OBTAIN ERROR PRINTOUTS.
 263
 264         LOC 4327        MULTIPLY/DIVIDE EXERCISE ERROR HALT.  THE AC
 265                         DISPLAYS NUMBER OF ROUTINE WHERE FAILURE
 266                         OCCURED (ROUTINES 4,5,6,OR 7).  PRESS CONTINUE
 267                         TO RESUME TESTING, OR SET SR5 TO 0 TO OBTAIN
 268                         ERROR PRINTOUT.
 269
 270         LOC 1044        UNEXPECTED INTERRUPT HALT.  A DEVICE OTHER THAN
 271                         TELETYPE READER OR PRINTER HAS INTERRUPTED.  TURN
 272                         OFF DEVICE.  PRESS CONTINUE.
 273
 274 6.3     ERROR PRINTOUTS
 275         ---------------
 276
 277 6.3.1   MULTIPLICATION FAILURE ERROR PRINTOUTS
 278         ---------------------------------------
 279
 280         MUYERR  L           C(AC)           C(MQ)           C(MB)       MODE "X"
 281
 282         PROB    0       000000000000    101000100001    111100000110
 283     A-
 284         GOOD    0       100110000010    101111000110    111100000110
 285         BAD     0       100101000010    101111000110    111100000110
 286
 287         SCA             000000001100
 288 \f
 289     B-  ERRORS PER HUNDRED: 0100
 290
 291         SCCNT   L           C(AC)           C(MQ)
 292
 293         SC0     0       000000000000    101000100001
 294         SC1     0       011110000011    101000010000
 295         SC2     0       001111000001    101010001000
 296         SC3     0       000111100000    011010100010
 297         SC4     0       000011110000    011010100010
 298     C-  SC5     0       000001111000    001101010001
 299         SC6     0       011110111111    000110101000
 300         SC7     0       001111010000    100011010100
 301         SC8     0       000111101111    110001101010
 302         SC9     0       000011110111    111000110101
 303         SC10    0       011111111110    111100011010
 304         SC11    0       001111111111    011110001101
 305
 306         FNRSLT  0       100110000010    101111000110
 307
 308         PRINTOUTS A,B,AND C ARE SHOWN IN THE ORDER IN WHICH THEY
 309         OCCUR.  PRINTOUTS B AND C DO NO OCCUR WITHOUT PRINTOUT A.
 310
 311         PRINTOUT A OCCURS AFTER A MULTIPLICATION FAILURE IF SR5 IS
 312         OFF.  OTHERWISE, THE PROGRAM STOPS AT MUYERR HALT.  THIS
 313         PRINTOUT OCCURS IN ROUTINES 0 AND 1 ONLY.
 314
 315         MUYERR          =MULTIPLICATION ERROR; MODE OF OPERATION
 316         PROB            =ORIGINAL C(L), C(AC), C(MQ), C(MB)
 317         GOOD            =CORRECT C(L), C(AC), C(MQ), C(MB) RESULTS
 318         BAD             =INCORRECT C(L), C(AC), C(MQ), C(MB) RESULTS
 319         SCA             =CONTENTS OF STEP COUNTER AFTER EXECUTION OF
 320                          MUY INSTRUCTION.
 321
 322         PRINTOUT B INDICATES THE NUMBER OF ERRORS PER 100 TRIES.  SR7
 323         MUST BE ON TO OBTAIN THIS PRINTOUT.
 324
 325         PRINTOUT C IS A STEP BY STEP DISPLAY OF WHAT THE CORRECT
 326         CONTENTS OF THE LINK, AC AND MQ SHOULD BE DURING EXECUTION OF EACH
 327         FAILING MULTIPLY OPERATION.  EACH LINE DISPLAYS THE CONTENTS OF THE
 328         REGISTERS AT THE START OF EACH STEP COUNTER COUNT.  AN ADDITIONAL
 329         LINE LABELED FNRSLT IS PRINTED AFTER SC11 TO DISPLAY THE FINAL REGISTER
 330         CONTENTS AT END OF STEP COUNT 11.  SR8 MUST BE ON TO OBTAIN THIS
 331         PRINTOUT.
 332
 333         UPON TERMINATION OF THE PRINTOUT, THE PROGRAM ENTERS A SCOPE
 334         LOOP THAT CONTINUOUSLY EXECUTES THE FAILING MULTIPLY OPERATION, IN
 335         ORDER TO PERMIT SCOPING OF THE REGISTERS.
 336 \f
 337 6.3.2   DIVISION FAILURE ERROR PRINTOUTS
 338         --------------------------------
 339
 340         DIVERR  L           C(AC)           C(MQ)           C(MB)       MODE "X"
 341
 342         PROB    0       000000000111    000111000111    000000001000
 343     A-
 344         GOOD    0       000000000111    111000111000    000000001000
 345         BAD     0       000000000111    111000111000    000000001000
 346
 347         SCA             000000001101
 348
 349    B-   ERRORS PER HUNDRED:  0100
 350
 351         SCCNT   L           C(AC)           C(MB)
 352
 353         SC0     0       000000000111    000111000111
 354         SC1     0       000000000001    001110001110
 355         SC2     0       000000001100    011100011101
 356         SC3     1       111111110111    111000111011
 357    C-   SC4     1       111111111110    110001110111
 358         SC5     0       000000001100    100011101110
 359         SC6     1       111111110111    000111011100
 360         SC7     1       111111111110    001110111000
 361         SC8     0       000000001100    011101110001
 362         SC9     1       111111110111    111011100011
 363         SC10    1       111111111110    110111000111
 364         SC11    0       000000001100    101110001110
 365         SC12    1       111111110111    011100011100
 366         SC13    1       111111111111    111000111000
 367
 368         FNRST   0       000000000111    111000111000
 369
 370         PRINTOUTS A,B, AND C ARE SHOWN IN THE ORDER IN WHICH THEY
 371         OCCUR.  PRINTOUTS B AND C DO NOT OCCUR WITHOUT PRINTOUT A.
 372
 373         PRINTOUT A OCCURS AFTER A DIVISION FAILURE IF SR5 IF OFF.
 374         OTHERWISE, THE PROGRAM STOPS AT DIVERR HALT.  THIS PRINTOUT
 375         OCCURS IN ROUTINES 2 AND 3 ONLY.
 376
 377         DIVERR          =DIVISION ERROR; MODE OF OPERATION
 378         PROB            =ORIGINAL C(L), C(AC), C(MQ), C(MB)
 379         GOOD            =CORRECT C(L), C(AC), C(MQ), C(MB) RESULTS
 380         BAD             =INCORRECT C(L), C(AC), C]Q), C(MB) RESULTS
 381         SCA             =CONTENTS OF STEP COUNTER AFTER EXECUTION
 382                          OF DVI INSTRUCTION.
 383
 384         PRINTOUT B INDICATES THE NUMBER OF ERRORS PER 100 TRIES.  SR7
 385         MUST BE ON TO OBTAIN THIS PRINTOUT.
 386 \f
 387         PRINTOUT C IS A STEP BY STEP DISPLAY OF WHAT THE CORRECT
 388         CONTENTS OF THE LINK, AC, AND MQ SHOULD BE DURING EXECUTION
 389         OF THE FAILING DIVIDE OPERATION.  EACH LINE DISPLAYS THE
 390         CONTENTS OF THE REGISTERS AT THE START OF EACH STEP COUNTER
 391         COUNT.  AN ADDITIONAL LINE LABELED FNRSLT IS PRINTED AFTER
 392         SC0 IN CASE OF DIVIDE OVERFLOW, OR AFTER SC13 IN CASE OF A
 393         NORMAL DIVIDE OPERATION TO DISPLAY THE FINAL CONTENTS OF THE
 394         REGISTERS AT END OF LAST STEP COUNT.  SR8 MUST BE ON TO
 395         OBTAIN THIS PRINTOUT
 396
 397         UPON TERMINATION OF THE PRINTOUT, THE PROGRAM ENTERS A SCOPE
 398         LOOP THAT CONTINUALLY EXECUTES THE FAILING DIVIDE OPERATION,
 399         IN ORDER TO PERMIT SCOPING OF THE REGISTERS.
 400
 401 6.3.3   MULTIPLY DIVIDE EXERCISER ERROR PRINTOUTS
 402         -----------------------------------------
 403
 404         PROB    AXB\B=A
 405
 406         A=7243          B=1130
 407         EXERR           L       C(AC)           C(MQ)           MODE "X"
 408     A-
 409         GOOD            0       000000000000    111010100011
 410         BAD             1       011111000011    101110010010
 411
 412     B-  ERRORS PER HUNDRED:  0100
 413
 414         PROB            AXB\BXB\A=B
 415
 416         A=7243          B=1130
 417         EXERR           L       C(AC)           C(MQ)           MODE "X"
 418     C-
 419         GOOD            0       000000000000    001001011000
 420         BAD             0       100011100111    000100100011
 421
 422     D-  ERRORS PER HUNDRED:  0000
 423
 424         PROB            AXB\BXB\AXA\A=B
 425
 426         A=7243          B=1130
 427         EXERR           L       C(AC)           C(MQ)           MODE "X"
 428     E-
 429         GOOD            0       000000000000    001001011000
 430         BAD             0       001001010110    000111110011
 431
 432     F-  ERRORS PER HUNDRED:  0100
 433
 434         PROB            AXB\BXB\AXA\AXA\B=A
 435
 436         A=7243          B=1130
 437         EXERR           L       C(AC)           C(MQ)           MODE "X"
 438
 439     G-
 440         GOOD            0       000000000000    111010100011
 441         BAD             0       011010001100    101110101101
 442
 443     H-  ERRORS PER HUNDRED:  0100
 444 \f
 445         PRINTOUTS B,D,F, AND H DO NOT OCCUR WITHOUT THEIR PRECEDING
 446         PRINTOUTS.  SR7 MUST BE ON FOR THESE PRINTOUTS TO OCCUR.  THEY
 447         INDICATE THE NUMBER OF TIMES A PROBLEM FAILED PER 100 TRIES.
 448
 449         PRINTOUT A OCCURS DURING EXECUTION OF ROUTINE 4.
 450
 451         PRINTOUT C OCCURS DURING EXECUTION OF ROUTINE 5.
 452
 453         PRINTOUT E OCCURS DURING EXECUTION OF ROUTINE 6.
 454
 455         PRINTOUT G OCCURS DURING EXECUTION OF ROUTINE 7.
 456
 457         SR5 MUST BE OFF FOR PRINTOUTS A,C,E, OR G TO OCCUR.
 458
 459         PRINTOUTS A,C,E, AND G HAVE THE FOLLOWING FORMAT:
 460
 461                 PROB    DESCRIPTION OF MULTIPLY-DIVIDE EXERCISE USED.
 462                 A=XXXX
 463                 B=XXXX  VALUES FOR A AND B USED DURING THE EXERCISE.
 464
 465                 EXERR   MULTIPLY-DIVIDE EXERCISER ERROR AND THE MODE
 466                         THAT FAILED. ("A" OR "B")
 467
 468                 GOOD    CORRECT C(L),C(AC), AND C(MQ) RESULTS.
 469
 470                 BAD     INCORRECT C(L),C(AC), AND C(MQ) RESULTS.
 471
 472 7.      RESTRICTIONS
 473         ------------
 474
 475 7.1     STARTING RESTRICTIONS
 476         ---------------------
 477
 478         ONLY THOSE ADDRESSES GIVEN IN SECTION 4.2 SHOULD BE USED.
 479
 480 8.      MISCELLANEOUS
 481         -------------
 482
 483 8.1     EXECUTION TIME
 484         --------------
 485
 486         THE TELETYPE BELL WILL RING AT THE END OF 7 PROGRAM PASSES
 487         WHICH IS APPROXIMATELY EVERY MINUTE AND "KE8 2" WILL BE PRINTED
 488         OUT APPROXIMATELY EVERY 10 MINUTES.
 489 \f
 490 8.2     OSCILLOSCOPE SETUP
 491         ------------------
 492
 493         THE FOLLOWING OSCILLOSCOPE SETUP IS RECOMMENDED FOR VIEWING REGISTER
 494         BITS FOR A MULTIPLY OR DIVIDE PROBLEM.
 495
 496                 TIME BASE -     .5 US/DIV
 497                 SYNC - DRAWING M8340-0-1
 498                        MODULE TYPE - M8340
 499                        IC             E24
 500                        PIN             6
 501                        FUNCTION      SC=0L
 502
 503                 NOTE:  SYNC ON NEGATIVE SLOPE.
 504                 PROBE A - SAME AS SYNC.
 505                 PROBE B - LINK, AC, AND MQ FLIP-FLOPS.
 506
 507 9.      PROGRAM DESCRIPTION
 508         -------------------
 509
 510 9.1     PROGRAM ORGANIZATION
 511         --------------------
 512
 513         THE PDP-8/E EAE (KE8-E) MULTIPLY-DIVIDE TEST IS ORGANIYED AS FOLLOWS:
 514
 515         A.  CONTROL ROUTINE.  THIS ROUTINE CONTROLS PROGRAM SEQUENCES BY
 516             HONORING OPTIONS SET IN SR0 THROUGH SR4, AND SR9 THROUGH SR11.
 517
 518         B.  SUBROUTINES
 519
 520         C.  TEST ROUTINES, EIGHT ROUTINES.  ONE PROGRAM PASS CONSISTS
 521             OF 7 PASSES THROUGH THESE ROUTINES.
 522
 523 9.2     MAJOR SUBROUTINES
 524         -----------------
 525
 526         THERE ARE THREE MAJOR SUBROUTINES.  EACH OF THESE SUBROUTINES
 527         IS CALLED ON BY ONE OR MORE TEST ROUTINES.  THESE SUBROUTINES
 528         CONTROL TESTING, ERROR DETECTION, ERROR PRINTOUTS, SIMULATION,
 529         AND SCOPE LOOPS.
 530
 531         A.  MULTIPLY TEST SUBROUTINE.  CALLED ON BY TEST ROUTINES 0 AND 1.
 532             THE CALLING ROUTINE PROVIDES THE ADDRESS OF A TABLE CONTAINING
 533             MULTIPLICATION OPERANDS AND THE EXPECTED RESULTS, AND THE
 534             NUMBER OF TESTS IN THE TABLE.
 535
 536         B.  DIVIDE TEST SUBROUTINE.  CALLED ON BY TEST ROUTINES 2 AND 3.  THE
 537             CALLING ROUTINE PROVIDES THE ADDRESS OF A TABLE CONTAINING
 538             DIVISION OPERANDS AND THE EXPECTED RESULTS, AND THE NUMBER
 539             OF TESTS IN THE TABLE.
 540
 541         C.  MULTIPLY-DIVIDE EXERCISER TEST SUBROUTINE.  CALLED ON BY TEST
 542             ROUTINES 4, 5, 6, AND 7.  THE CALLING ROUTINE MOVES 2
 543             OPERANDS TO SYMBOLIC LOCATIONS A AND B, PROVIDES THE
 544             SUBROUTINE WITH THE ADDRESS OF EXERCISE TO USE, AND THE
 545             ADDRESS OF THE CORRECT RESULT.
 546 \f
 547 9.3     TEST ROUTINES
 548         -------------
 549
 550         THE PROGRAM CONTAINS EIGHT TEST ROUTINES NUMBERED FROM 0 THROUGH 7.
 551
 552         TEST ROUTINE 0.  FIXED MULTIPLY TEST.  MUY INSTRUCTION IS TESTED
 553         USING 55 FIXED TESTS.
 554
 555         TEST ROUTINE 1.  RANDOM MULTIPLY TEST.  MUY INSTRUCITON IS TESTED
 556         USING 500 TESTS WHOSE OPERANDS ARE DETERMINED AT RANDOM.  THE
 557         RESULTS OF THESE TESTS ARE DETERMINED THROUGH SIMULATION.
 558
 559         TEST ROUTINE 2.  FIXED DIVIDE TEST.  DVI INSTRUCTION IS TESTED
 560         USING 40 FIXED TESTS.
 561
 562         TEST ROUTINE 3.  RANDOM DIVIDE TEST.  DVI INSTRUCTION IS TESTED
 563         USING 333 TESTS WHOSE OPERANDS ARE DETERMINED AT RANDOM.  THE RESULTS
 564         OF THESE TESTS ARE DETERMINED THROUGH SIMULATION.
 565
 566         TEST ROUTINE 4.  MULTIPLY/DIVIDE EXERCISE TEST.  THE ROUTINE
 567         GENERATES 700 SETS OF TWO NON-ZERO RANDOM NUMBERS.  EACH SET OF
 568         NUMBERS IS USED TO TEST THE ABILITY OF THE HARDWARE TO PERFORM
 569         SUCCESSIVE MULTIPLY AND DIVIDE OPERATIONS.  THIS ROUTINE CHECKS
 570         FOR CORRECT RESULTS USING THE PROBLEM AXB/B=A.
 571
 572         TEST ROUTINE 5.  MULTIPLY/DIVIDE EXERCISE TEST.  USING THE NUMBER
 573         SET GENERATED BY ROUTINE 4, THIS ROUTINE CHECKS FOR CORRECT
 574         RESULTS USING THE PROBLEM AXB/BXB/A=B.
 575
 576         TEST ROUTINE 6.  MULTIPLY/DIVIDE EXERCISE TEST.  USING THE NUMBER
 577         SET GENERATED BY ROUTINE 4, THIS ROUTINE CHECKS FOR CORRECT RESULTS
 578         USING THE PROBLEM AXB/BXB/AXA/A=B.
 579
 580         TEST ROUTINE 7.  MULTIPLY/DIVIDE EXERCISE TEST.  USING THE NUMBER
 581         SET GENERATED BY ROUTINE 4, THIS ROUTINE CHECKS FOR CORRECT
 582         RESULTS USING THE PROBLEM AXB/BXB/AXA/AXA/B=A.
 583
 584         NOTE:   IF THROUGH PROGRAM SEQUENCE MODIFICATION EITHER OF ROUTINES
 585                 5 THROUGH 7 IS EXECUTED PRIOR TO EXECUTION OF ROUTINE 4,
 586                 THE ROUTINE CURRENTLY BEING EXECUTED WILL GENERATE A NUMBER SET,
 587                 AND THE ROUTINE FOLLOWING WILL USE THIS NUMBER SET FOR
 588                 THEIR TESTS.
 589
 590                 IN NORMAL OPERATION, ROUTINE 4 GENERATES A NUMBER SET
 591                 EVERY TIME IT IS EXECUTED, AND THE ROUTINES FOLLOWING
 592                 USE THE NUMBER SET GENERATED BY ROUTINE 4.  THE REASON
 593                 THIS IS TO PERMIT EASIER ISOLATION OF A FAILURE.
 594
 595                 ROUTINE 4 PERFORMS ONE MUY, AND ONE DVI INSTRUCTION.
 596                 ROUTINE 5 PERFORMS THE SAME MUY AND DVI INSTRUCTION,
 597                 PLUS ANOTHER MUY AND DVI INSTRUCTION.  BY USING THE SAME
 598                 DATA, SHOULD A FAILURE OCCUR IN ROUTINE 5, THE FAILURE IS
 599                 THE LOCALIYED TO THE SECOND MUY OR SECOND DVI INSTRUCTION.